| Abstract: | The transient thermal-stress concentrations produced by cracks, sharp and round notches, and fillets, in plates were measured photoelastically and compared to values computed numerically by finite element and finite-difference techniques. The stresses near the tips of the cracks and the notches were singular and observed to agree with isothermal linear elastic fracture mechanics. Stresses near the root of the fillets were always less than the theoretical maximum, αE(T?T initial ), but often greater than the maximum stresses measured in a straight-edged plate subjected to similar thermal conditions. |
